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4ed29c73 MV |
1 | ;;;; syncase.test --- test suite for (ice-9 syncase) -*- scheme -*- |
2 | ;;;; | |
fa3df855 | 3 | ;;;; Copyright (C) 2001, 2006, 2009, 2010, 2011 Free Software Foundation, Inc. |
4ed29c73 | 4 | ;;;; |
53befeb7 NJ |
5 | ;;;; This library is free software; you can redistribute it and/or |
6 | ;;;; modify it under the terms of the GNU Lesser General Public | |
7 | ;;;; License as published by the Free Software Foundation; either | |
8 | ;;;; version 3 of the License, or (at your option) any later version. | |
4ed29c73 | 9 | ;;;; |
53befeb7 | 10 | ;;;; This library is distributed in the hope that it will be useful, |
4ed29c73 | 11 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
53befeb7 NJ |
12 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | ;;;; Lesser General Public License for more details. | |
4ed29c73 | 14 | ;;;; |
53befeb7 NJ |
15 | ;;;; You should have received a copy of the GNU Lesser General Public |
16 | ;;;; License along with this library; if not, write to the Free Software | |
17 | ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
4ed29c73 MV |
18 | |
19 | ;; These tests are in a module so that the syntax transformer does not | |
20 | ;; affect code outside of this file. | |
21 | ;; | |
d6e04e7c | 22 | (define-module (test-suite test-syncase) |
fd598527 AW |
23 | #:use-module (test-suite lib) |
24 | #:use-module (system base compile) | |
25 | #:use-module ((srfi srfi-1) :select (member))) | |
4ed29c73 | 26 | |
0b1b772f MV |
27 | (define-syntax plus |
28 | (syntax-rules () | |
29 | ((plus x ...) (+ x ...)))) | |
30 | ||
31 | (pass-if "basic syncase macro" | |
d6e04e7c | 32 | (= (plus 1 2 3) (+ 1 2 3))) |
ad5f5ada NJ |
33 | |
34 | (pass-if "@ works with syncase" | |
35 | (eq? run-test (@ (test-suite lib) run-test))) | |
cb65f76c AR |
36 | |
37 | (define-syntax string-let | |
38 | (lambda (stx) | |
39 | (syntax-case stx () | |
40 | ((_ id body ...) | |
41 | #`(let ((id #,(symbol->string | |
42 | (syntax->datum #'id)))) | |
43 | body ...))))) | |
44 | ||
45 | (pass-if "macro using quasisyntax" | |
46 | (equal? (string-let foo (list foo foo)) | |
47 | '("foo" "foo"))) | |
aa3819aa AR |
48 | |
49 | (define-syntax string-case | |
50 | (syntax-rules (else) | |
51 | ((string-case expr ((string ...) clause-body ...) ... (else else-body ...)) | |
52 | (let ((value expr)) | |
53 | (cond ((member value '(string ...) string=?) | |
54 | clause-body ...) | |
55 | ... | |
56 | (else | |
57 | else-body ...)))) | |
58 | ((string-case expr ((string ...) clause-body ...) ...) | |
59 | (let ((value expr)) | |
60 | (cond ((member value '(string ...) string=?) | |
61 | clause-body ...) | |
62 | ...))))) | |
63 | ||
64 | (define-syntax alist | |
65 | (syntax-rules (tail) | |
66 | ((alist ((key val) ... (tail expr))) | |
67 | (cons* '(key . val) ... expr)) | |
68 | ((alist ((key val) ...)) | |
69 | (list '(key . val) ...)))) | |
70 | ||
f929b9e5 AW |
71 | (with-test-prefix "with-syntax" |
72 | (pass-if "definitions allowed in body" | |
73 | (equal? (with-syntax ((a 23)) | |
74 | (define b #'a) | |
75 | (syntax->datum b)) | |
76 | 23))) | |
77 | ||
aa3819aa AR |
78 | (with-test-prefix "tail patterns" |
79 | (with-test-prefix "at the outermost level" | |
80 | (pass-if "non-tail invocation" | |
81 | (equal? (string-case "foo" (("foo") 'foo)) | |
82 | 'foo)) | |
83 | (pass-if "tail invocation" | |
84 | (equal? (string-case "foo" (("bar") 'bar) (else 'else)) | |
85 | 'else))) | |
86 | (with-test-prefix "at a nested level" | |
87 | (pass-if "non-tail invocation" | |
88 | (equal? (alist ((a 1) (b 2) (c 3))) | |
89 | '((a . 1) (b . 2) (c . 3)))) | |
90 | (pass-if "tail invocation" | |
91 | (equal? (alist ((foo 42) (tail '((bar . 66))))) | |
92 | '((foo . 42) (bar . 66)))))) | |
fd598527 AW |
93 | |
94 | (with-test-prefix "serializable labels and marks" | |
95 | (compile '(begin | |
96 | (define-syntax duplicate-macro | |
97 | (syntax-rules () | |
98 | ((_ new-name old-name) | |
99 | (define-syntax new-name | |
100 | (syntax-rules () | |
101 | ((_ . vals) | |
102 | (letrec-syntax ((apply (syntax-rules () | |
103 | ((_ macro args) | |
104 | (macro . args))))) | |
105 | (apply old-name vals)))))))) | |
106 | ||
107 | (define-syntax kwote | |
108 | (syntax-rules () | |
109 | ((_ arg1) 'arg1))) | |
110 | ||
111 | (duplicate-macro kwote* kwote)) | |
112 | #:env (current-module)) | |
113 | (pass-if "compiled macro-generating macro works" | |
114 | (eq? (eval '(kwote* foo) (current-module)) | |
115 | 'foo))) | |
a2f7536d JG |
116 | |
117 | (with-test-prefix "changes to expansion environment" | |
8210c853 | 118 | (pass-if "expander detects changes to current-module with @@ @@" |
54096be7 AW |
119 | (compile '(begin |
120 | (define-module (new-module)) | |
8210c853 MW |
121 | (@@ @@ (new-module) |
122 | (define-syntax new-module-macro | |
123 | (lambda (stx) | |
124 | (syntax-case stx () | |
125 | ((_ arg) (syntax arg)))))) | |
126 | (@@ @@ (new-module) | |
127 | (new-module-macro #t))) | |
54096be7 | 128 | #:env (current-module)))) |
9846796b AW |
129 | |
130 | (define-module (test-suite test-syncase-2) | |
131 | #:export (make-the-macro)) | |
132 | ||
133 | (define (hello) | |
134 | 'hello) | |
135 | ||
136 | (define-syntax make-the-macro | |
137 | (syntax-rules () | |
138 | ((_ name) | |
139 | (define-syntax name | |
140 | (syntax-rules () | |
141 | ((_) (hello))))))) | |
142 | ||
143 | (define-module (test-suite test-syncase)) ;; back to main module | |
144 | (use-modules (test-suite test-syncase-2)) | |
145 | ||
146 | (make-the-macro foo) | |
147 | ||
148 | (with-test-prefix "macro-generating macro" | |
149 | (pass-if "module hygiene" | |
150 | (eq? (foo) 'hello))) | |
b78d91d5 AW |
151 | |
152 | (pass-if "_ is a placeholder" | |
153 | (equal? (eval '(begin | |
154 | (define-syntax ciao | |
155 | (lambda (stx) | |
156 | (syntax-case stx () | |
157 | ((_ _) | |
158 | "ciao")))) | |
159 | (ciao 1)) | |
160 | (current-module)) | |
161 | "ciao")) | |
ab6becd4 AW |
162 | |
163 | (define qux 30) | |
164 | ||
165 | (with-test-prefix "identifier-syntax" | |
166 | ||
167 | (pass-if "global reference" | |
168 | (let-syntax ((baz (identifier-syntax qux))) | |
169 | (equal? baz qux))) | |
170 | ||
171 | (pass-if "lexical hygienic reference" | |
172 | (let-syntax ((baz (identifier-syntax qux))) | |
173 | (let ((qux 20)) | |
174 | (equal? (+ baz qux) | |
175 | 50)))) | |
176 | ||
177 | (pass-if "lexical hygienic reference (bound)" | |
178 | (let ((qux 20)) | |
179 | (let-syntax ((baz (identifier-syntax qux))) | |
180 | (equal? (+ baz qux) | |
181 | 40)))) | |
182 | ||
183 | (pass-if "global reference (settable)" | |
184 | (let-syntax ((baz (identifier-syntax | |
185 | (id qux) | |
186 | ((set! id expr) (set! qux expr))))) | |
187 | (equal? baz qux))) | |
188 | ||
189 | (pass-if "lexical hygienic reference (settable)" | |
190 | (let-syntax ((baz (identifier-syntax | |
191 | (id qux) | |
192 | ((set! id expr) (set! qux expr))))) | |
193 | (let ((qux 20)) | |
194 | (equal? (+ baz qux) | |
195 | 50)))) | |
196 | ||
197 | (pass-if "lexical hygienic reference (bound, settable)" | |
198 | (let ((qux 20)) | |
199 | (let-syntax ((baz (identifier-syntax | |
200 | (id qux) | |
201 | ((set! id expr) (set! qux expr))))) | |
202 | (equal? (+ baz qux) | |
203 | 40)))) | |
204 | ||
205 | (pass-if "global set!" | |
206 | (let-syntax ((baz (identifier-syntax | |
207 | (id qux) | |
208 | ((set! id expr) (set! qux expr))))) | |
209 | (set! baz 10) | |
210 | (equal? (+ baz qux) 20))) | |
211 | ||
212 | (pass-if "lexical hygienic set!" | |
213 | (let-syntax ((baz (identifier-syntax | |
214 | (id qux) | |
215 | ((set! id expr) (set! qux expr))))) | |
216 | (and (let ((qux 20)) | |
217 | (set! baz 5) | |
218 | (equal? (+ baz qux) | |
219 | 25)) | |
220 | (equal? qux 5)))) | |
221 | ||
222 | (pass-if "lexical hygienic set! (bound)" | |
223 | (let ((qux 20)) | |
224 | (let-syntax ((baz (identifier-syntax | |
225 | (id qux) | |
226 | ((set! id expr) (set! qux expr))))) | |
227 | (set! baz 50) | |
228 | (equal? (+ baz qux) | |
229 | 100))))) | |
fa3df855 AW |
230 | |
231 | (with-test-prefix "top-level expansions" | |
232 | (pass-if "syntax definitions expanded before other expressions" | |
233 | (eval '(begin | |
234 | (define even? | |
235 | (lambda (x) | |
236 | (or (= x 0) (odd? (- x 1))))) | |
237 | (define-syntax odd? | |
238 | (syntax-rules () | |
239 | ((odd? x) (not (even? x))))) | |
240 | (even? 10)) | |
241 | (current-module)))) |